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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h3>小黑的书架</h3>
        <ul>
          <!-- ! :key v-for指定唯一值，方便在遍历数据的时候能够正确的进行排序 -->
          <li v-for="item in booksList" :key="item.id">
            <span>{{item.name}}</span>
            <span>{{item.author}}</span>
            <button @click="del(item.id)">删除</button>
          </li>
        </ul>
      </div>
      <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
      <script>
        const app = new Vue({
          el: '#app',
          data: {
            booksList: [
              { id: 1, name: '《红楼梦》', author: '曹雪芹' },
              { id: 2, name: '《西游记》', author: '吴承恩' },
              { id: 3, name: '《水浒传》', author: '施耐庵' },
              { id: 4, name: '《三国演义》', author: '罗贯中' }
            ]
          },
          methods:{
            del(id){
               this.booksList =  this.booksList.filter(item => item.id != id)
            }
          }
        })
      </script>
</body>
</html>